Improvement in churns



UNITED STATES PATENT OFFICE.

LYMAN S. COLBURN, OF OBERLIN, OHIO.

IMPROVEMENT IN CHU RNS.

Specification forming part of Letters Patent No. 39,035, dated June 30,1863.

To all whom it may concern.

Be it known that I, LYMAN S. GOLBURN, of Oberlin, in the county ofLorain and State of Ohio, have invented a new and useful Improvement inChurns; and I do hereby de clare that the following is a full and exactdescription thereof, reference being had tothe accompanying drawings,and to the letters of reference marked thereon, in which- Figure l is aperspective view of my churn, the cover being removed to show part ofthe interior. Fig. 2 is a transverse section of the churn-box, showingthe shaft and dashers or beaters in place. Fig. 3 represents the coverdet-ached from the box. Fig. 4is the shaft in the process ofconstruction, showing the oblique mortises for inserting the beaters.Fig. 5 is the shaft, with the radial beaters inserted into the mortises.

My invention consists in the combination of a churnbox with a broadhorizontal shaft and with a series of broad beaters set obliquely upon ahorizontal shaft, and also in peculiar counter-beaters in the lower partof the box.

The object of my invention is to improve the efficiency of boxchurns bygiving the cream both a rotary and a longitudinal motion when the churnis in operation, and at the same time securing the effect ofcounterbeaters placed in the lower part of the box.

In the construction of my churn the box may be externally of theordinary form, as shown at Bin the accompanying drawings, Figs. l and 2.The shaft of the churn runs lengthwise of the box in a horizontalposition, as seen at Fig. 2, and carries a series of beaters,c, Fig. 5.rlhis shaft is made very broadsay about iive inches-and about one andonefourth inches in thickness. A series of mortises are made through theshaft, as seen at m, Fig. 4. Into these mortises are permanentlyinserted a series of beaters, c, above mentioned. The alternate sides ofthe shaft are beveled from the mortises to the edges of theA shaft, asseen at a, Fig. 2. When the churn is in operation, these beveledsurfaces strike the cream and thereby force the latter from the shaftand bring it more fully under the action of the rotary beaters c. Thesame action facilitates the gathering of the butter. The fan-like sidesof the shaft force a copious supply of air into the crea-m, givingthelatter the form of spray when the churn is in full operation. Thedashers or beaters c, Fig. 5, are ilat and of a length corresponding tothe size of the churn-boxsay about ten inches. They are closely fittedinto the Amortises m, beingset at right angles to the shaft, so thattheir faces are parallel throughout the whole series and on both sidesof the shaft. The shaft and beaters being united as one piece areremovable from the box for washing. The shaft is held in place by meansof a metallic socket, d, Fig. 4, which is slipped upon the inner end ofthe shaft of the pinion p, while the bearingf is held at the bottom of agroove in the opposite end of the box by means of a wedge or slide s,Fig. l, dovetailed into the end board of the box.

, The churn is operated by means of the crank-wheel w, which engageswith the pinion-wheel p, Fig. l. AAir is admitted into the churn throughshielded perforations h in the cover. In the lower part `of the box areplaced counter beaters k, Fig, 2, in the form of stairs in order toreact upon the cream as it is forced from the shaft against the box. Iusually employ about six of these on each side of the box, so as to forma sort of trough `or bed for the beaters to work in; but the number maybe varied without changing the principle. These counter-beaters 7cincrease the eiiiciency ofthe churn.

Having thus fully described my invention, what I claim and desire tosecure by Letters Patent of the United States, is-

The above-described dasher having the flat oblique beaters and the broadhorizontal shaft, constructed and operated substantially in the mannerand for the purposes set forth.

L. S. COLBURN.

In presence of- W. P. HARRIS, A. H. CLARK.

